comp.os.linux.networking

sam.barker0@gmail.com wrote:
> Hi,
> I am having trouble with getbyhostname().I works sometimes but on
> other occasions it crashes.
> IPADDRESS is a string say "192.123.12.1"

Well, gethostbyname really does work, honest. So you will have to send
us a snippet of your code if you want advice on what is wrong with it.

Robert

>
> (gdb)
> Client::SendSocket (this=0xbfa9493c, QuerBuf=@0xbfa948c4,
> IPADDRESS=@0xbfa948d4) at Client.cc:141
> 141 h = gethostbyname(IPADDRESS.c_str());
> (gdb)
> *** glibc detected *** /home/workspace/DNSResolver1/checkstring:
> free(): invalid next size (normal): 0x0804eb38 ***
> ======= Backtrace: =========
> /lib/tls/i686/cmov/libc.so.6[0xb7db1d65]
> /lib/tls/i686/cmov/libc.so.6(cfree+0x90)[0xb7db5800]
> /lib/tls/i686/cmov/libc.so.6(fclose+0x134)[0xb7da06f4]
> /lib/tls/i686/cmov/libc.so.6[0xb7e2a73d]
> /lib/tls/i686/cmov/libc.so.6(__res_ninit+0x25)[0xb7e2ae65]
> /lib/tls/i686/cmov/libc.so.6(__res_maybe_init+0x7b)[0xb7e2c30b]
> /lib/tls/i686/cmov/libc.so.6(__nss_hostname_digits_dots+0x2d)
> [0xb7e2dcdd]
> /lib/tls/i686/cmov/libc.so.6(gethostbyname+0x9a)[0xb7e3227a]